Android 权限和权限组之间的链接

我是 Android 开发新手。我正在查看 android 清单权限。有两件事。权限和权限组。我知道该列表位于

http://developer.android.com/reference/android/Manifest.permission.html

并不全面，您也可以添加自己的权限。但是，我想问是否可以将每个权限映射到提到的权限组

http://developer.android.com/reference/android/Manifest.permission_group.html.

可以使用包管理器getAllPermissionGroups() 和 queryPermissionsByGroup() 枚举整个 Android 权限层次结构。下面的代码在 5.1.1 (SDK 22) 设备上生成了最后显示的输出。标记为“个人”的组具有 groupInfo.flags == 1，并且似乎对应于 Marshmallow 中称为“危险”的权限组。

由于 SDK 级别的差异以及应用程序可以定义自定义权限的事实，您将在不同的设备上获得不同的权限层次结构。

/**
 * Uses PackageManager getAllPermissionGroups() and queryPermissionsByGroup()
 * to enumerate the Android permission hierarchy.
 */
private void showPermissionTree()
{
    final PackageManager pm = m_context.getPackageManager();
    if (pm == null)
        return;

    /*
     * Get a list of all permission groups and sort them alphabetically.
     * Then add to the end of the list the special case of a null group name. There can be
     * numerous permissions that are not listed under a group name.
     */
    List<PermissionGroupInfo> groupInfoList = pm.getAllPermissionGroups(0);
    if (groupInfoList == null)
        return;

    ArrayList<String> groupNameList = new ArrayList<>();
    for (PermissionGroupInfo groupInfo : groupInfoList) {
        String groupName = groupInfo.name;
        if (groupName != null) {
            if (Build.VERSION.SDK_INT >= 17) {
                /*
                 * SDK 17 added the flags field. If non-zero, the permission group contains
                 * permissions that control access to user personal data.
                 * N.B. These are the permissions groups that are called "dangerous" in
                 * Marshmallow.
                 */
                if (groupInfo.flags != 0) {
                    groupName += " (personal)";
                }
            }
            groupNameList.add(groupName);
        }
    }

    Collections.sort(groupNameList);
    groupNameList.add(null);

    /*
     * Loop though each permission group, adding to the StringBuilder the group name and
     * the list of all permissions under that group.
     */
    StringBuilder sb = new StringBuilder(10000);
    final String INDENT = "   ";

    for (String groupName : groupNameList) {
        if (groupName == null)
            groupName = "null";

        sb.append("* ").append(groupName).append("\n");

        ArrayList<String> permissionNameList = getPermissionsForGroup(groupName);
        if (permissionNameList.size() > 0) {
            for (String permission : permissionNameList) {
                sb.append(INDENT).append(permission).append("\n");
            }
        } else {
            sb.append(INDENT).append("no permissions under group\n");
        }

        sb.append("\n");
    }

    m_textView.setText(sb.toString());
}


/*
 * Gets and returns a list of all permission under the specified group, sorted alphabetically.
 *
 * N.B. groupName can be null. The docs for PackageManager.queryPermissionsByGroup() say
 * "Use null to find all of the permissions not associated with a group."
 */
private ArrayList<String> getPermissionsForGroup(String groupName)
{
    final PackageManager pm = m_context.getPackageManager();
    final ArrayList<String> permissionNameList = new ArrayList<>();

    try {
        List<PermissionInfo> permissionInfoList =
                pm.queryPermissionsByGroup(groupName, PackageManager.GET_META_DATA);
        if (permissionInfoList != null) {
            for (PermissionInfo permInfo : permissionInfoList) {
                String permName = permInfo.name;
                if (permName == null) {
                    permName = "null";
                } else if (permName.isEmpty()) {
                    permName = "empty";
                }
                permissionNameList.add(permName);
            }
        }
    }
    catch (PackageManager.NameNotFoundException e) {
        // e.printStackTrace();
        Log.d(TAG, "permissions not found for group = " + groupName);
    }

    Collections.sort(permissionNameList);

    return permissionNameList;
}